Rick Olson wrote in post #29743:
The default value is nil, and thus false.
if myvar #some code else #default behaviour end
Works.
That works with @instance vars, but not local vars. You'll get a NameError. You can do this, however:
if defined?(my_var) # else # end
-- Rick Olson http://techno-weenie.net
Effective Answer
Mukto